Build for kgdb as well as for ddb (mutually exclusive).
This commit is contained in:
briggs
parent
8b8a1cfa73
commit
279833d138
@ -1,4 +1,4 @@
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# $NetBSD: files.powerpc,v 1.21 2001/06/17 19:32:17 tsubai Exp $
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# $NetBSD: files.powerpc,v 1.22 2001/06/20 02:40:14 briggs Exp $
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defopt opt_altivec.h ALTIVEC K_ALTIVEC
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defopt OPENPIC
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defopt opt_ppcarch.h PPC_MPC6XX PPC_MPC8XX PPC_IBM4XX
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@ -10,6 +10,7 @@ file arch/powerpc/powerpc/fubyte.c
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file arch/powerpc/powerpc/fuswintr.c
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file arch/powerpc/powerpc/in_cksum.c
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file arch/powerpc/powerpc/ipkdb_glue.c ipkdb
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file arch/powerpc/powerpc/kgdb_machdep.c kgdb
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file arch/powerpc/powerpc/mem.c
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file arch/powerpc/powerpc/openpic.c openpic
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file arch/powerpc/powerpc/powerpc_machdep.c
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@ -21,8 +22,8 @@ file arch/powerpc/powerpc/suword.c
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file arch/powerpc/powerpc/suswintr.c
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file arch/powerpc/powerpc/sys_machdep.c
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file arch/powerpc/powerpc/vm_machdep.c
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file arch/powerpc/powerpc/setjmp.S ddb
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file arch/powerpc/powerpc/db_memrw.c ddb
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file arch/powerpc/powerpc/setjmp.S ddb | kgdb
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file arch/powerpc/powerpc/db_memrw.c ddb | kgdb
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file arch/powerpc/powerpc/db_disasm.c ddb
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file arch/powerpc/powerpc/db_interface.c ddb
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file arch/powerpc/powerpc/db_trace.c ddb
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@ -1,5 +1,5 @@
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/* $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ */
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/* $NetBSD: db_machdep.h,v 1.9 2001/06/13 06:01:48 simonb Exp $ */
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/* $NetBSD: db_machdep.h,v 1.10 2001/06/20 02:40:14 briggs Exp $ */
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/*
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* Mach Operating System
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@ -101,6 +101,28 @@ db_regs_t ddb_regs; /* register state */
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#define inst_load(ins) 0
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#define inst_store(ins) 0
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/*
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* GDB's register array is:
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* 32 4-byte GPRs
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* 32 8-byte FPRs
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* 7 4-byte UISA special-purpose registers
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* 16 4-byte segment registers
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* 32 4-byte standard OEA special-purpose registers,
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* and up to 64 4-byte non-standard OES special-purpose registers.
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* GDB keeps some extra space, so the total size of the register array
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* they use is 880 bytes (gdb-5.0).
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*/
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typedef long kgdb_reg_t;
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#define KGDB_NUMREGS 220 /* Treat all registers as 4-byte */
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#define KGDB_BUFLEN 512
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#define KGDB_PPC_PC_REG 96 /* first UISA SP register */
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#define KGDB_PPC_MSR_REG 97
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#define KGDB_PPC_CR_REG 98
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#define KGDB_PPC_LR_REG 99
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#define KGDB_PPC_CTR_REG 100
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#define KGDB_PPC_XER_REG 101
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#define KGDB_PPC_MQ_REG 102
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#ifdef _KERNEL
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void kdb_kintr __P((void *));
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231
sys/arch/powerpc/powerpc/kgdb_machdep.c
Normal file
231
sys/arch/powerpc/powerpc/kgdb_machdep.c
Normal file
@ -0,0 +1,231 @@
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/* $NetBSD: kgdb_machdep.c,v 1.1 2001/06/20 02:40:14 briggs Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Allen Briggs for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_ddb.h"
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#if defined(DDB)
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#error "Can't build DDB and KGDB together."
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#endif
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/*
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* Machine-dependent functions for remote KGDB.
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*/
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#include <sys/param.h>
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#include <sys/kgdb.h>
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#include <sys/systm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/reg.h>
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#include <machine/trap.h>
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#include <machine/pmap.h>
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/*
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* Determine if the memory at va..(va+len) is valid.
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*/
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int
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kgdb_acc(vaddr_t va, size_t len)
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{
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vaddr_t last_va;
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paddr_t pa;
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boolean_t v;
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last_va = va + len;
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va &= ~PGOFSET;
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last_va &= ~PGOFSET;
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do {
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/*
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* I think this should be able to handle
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* non-pmap_kernel() va's, too.
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*/
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if (!pmap_extract(pmap_kernel(), va, &pa))
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return 0;
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va += PAGE_SIZE;
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} while (va <= last_va);
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return (1);
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}
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/*
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* Translate a trap number into a unix compatible signal value.
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* (gdb only understands unix signal numbers). Some of these are bogus
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* and should be reviewed.
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*/
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int
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kgdb_signal(type)
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int type;
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{
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switch (type) {
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#ifdef PPC_IBM4XX
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case EXC_PIT: /* 40x - Programmable interval timer */
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case EXC_FIT: /* 40x - Fixed interval timer */
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return SIGALRM
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case EXC_CII: /* 40x - Critical input interrupt */
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case EXC_WDOG: /* 40x - Watchdog timer */
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case EXC_DEBUG: /* 40x - Debug trap */
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return SIGTRAP;
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case EXC_DTMISS: /* 40x - Instruction TLB miss */
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case EXC_ITMISS: /* 40x - Data TLB miss */
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return SIGSEGV;
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#endif
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#ifdef PPC_MPC6XX
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case EXC_PERF: /* 604/750/7400 - Performance monitoring */
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case EXC_BPT: /* 604/750/7400 - Instruction breakpoint */
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case EXC_SMI: /* 604/750/7400 - System management interrupt */
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case EXC_THRM: /* 750/7400 - Thermal management interrupt */
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return SIGTRAP;
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case EXC_IMISS: /* 603 - Instruction translation miss */
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case EXC_DLMISS: /* 603 - Data load translation miss */
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case EXC_DSMISS: /* 603 - Data store translation miss */
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return SIGSEGV;
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case EXC_RST: /* All but IBM 4xx - Reset */
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return SIGURG;
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case EXC_VEC: /* 7400 - Altivec unavailable */
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case EXC_VECAST: /* 7400 - Altivec assist */
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return SIGFPE;
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#endif
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case EXC_DECR: /* Decrementer interrupt */
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return SIGALRM;
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case EXC_EXI: /* External interrupt */
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return SIGINT;
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case EXC_PGM: /* Program interrupt */
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case EXC_ALI: /* Alignment */
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return SIGILL;
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case EXC_MCHK: /* Machine check */
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case EXC_TRC: /* Trace */
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return SIGTRAP;
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case EXC_ISI: /* Instruction storage interrupt */
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case EXC_DSI: /* Data storage interrupt */
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return SIGSEGV;
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case EXC_FPU: /* Floating point unavailable */
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case EXC_FPA: /* Floating-point assist */
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return SIGFPE;
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case EXC_SC: /* System call */
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return SIGURG;
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case EXC_RSVD: /* Reserved */
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case EXC_AST: /* Floating point unavailable */
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default:
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return SIGEMT;
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}
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}
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/*
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* Translate the values stored in the kernel regs struct to the format
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* understood by gdb.
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*/
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void
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kgdb_getregs(regs, gdb_regs)
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db_regs_t *regs;
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kgdb_reg_t *gdb_regs;
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{
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memcpy(gdb_regs, regs, 32 * sizeof(unsigned long));
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gdb_regs[KGDB_PPC_PC_REG] = regs->iar;
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gdb_regs[KGDB_PPC_MSR_REG] = regs->msr;
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gdb_regs[KGDB_PPC_CR_REG] = regs->cr;
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gdb_regs[KGDB_PPC_LR_REG] = regs->lr;
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gdb_regs[KGDB_PPC_CTR_REG] = regs->ctr;
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gdb_regs[KGDB_PPC_XER_REG] = regs->xer;
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}
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/*
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* Reverse the above.
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*/
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void
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kgdb_setregs(regs, gdb_regs)
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db_regs_t *regs;
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kgdb_reg_t *gdb_regs;
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{
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regs->xer = gdb_regs[KGDB_PPC_XER_REG];
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regs->ctr = gdb_regs[KGDB_PPC_CTR_REG];
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regs->lr = gdb_regs[KGDB_PPC_LR_REG];
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regs->cr = gdb_regs[KGDB_PPC_CR_REG];
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regs->msr = gdb_regs[KGDB_PPC_MSR_REG];
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regs->iar = gdb_regs[KGDB_PPC_PC_REG];
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memcpy(regs, gdb_regs, 32 * sizeof(unsigned long));
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}
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/*
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* Trap into kgdb to wait for debugger to connect,
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* noting on the console why nothing else is going on.
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*/
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void
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kgdb_connect(verbose)
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int verbose;
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{
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if (kgdb_dev < 0)
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return;
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if (verbose)
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printf("kgdb waiting...");
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__asm __volatile("tweq 1,1");
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if (verbose)
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printf("connected.\n");
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kgdb_debug_panic = 1;
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}
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/*
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* Decide what to do on panic.
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* (This is called by panic, like Debugger())
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*/
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void
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kgdb_panic()
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{
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if (kgdb_dev >= 0 && kgdb_debug_panic) {
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printf("entering kgdb\n");
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kgdb_connect(kgdb_active == 0);
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}
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}
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